Another day, another variation: when is enough enough?
Lewis
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D002170:Canada; D003695:Delivery of Health Care; D006296:Health Services / Q000706:statistics & numerical data*; D006801:Humans; D009985:Orthopedics; D010043:Outcome and Process Assessment, Health Care; D013122:Spinal Diseases / Q000601:surgery; D013514:Surgical Procedures, Operative / Q000706:statistics & numerical data*; D014481:United States